Regents Earth Science
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    • Prologue >
      • Lab Safety Zombie College
    • Models of the Earth
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      • History of the Cosmos
      • Modern Astronomy
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      • Earth-Moon-Sun System
      • The Suns Path / Seasons
    • Atmospheric Processes >
      • The Atmosphere
      • The Water Cycle
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      • Groundwater
    • Geology >
      • Dynamic Crust
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        • Interactive Geologic Time Scale
      • Surface Processes & Landforms >
        • Weathering, Erosion, & Deposition
        • Landforms
        • Glacial Geology
      • Rocks & Minerals
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History of the Cosmos
Modern Astro
Solar System
Earth-Moon-Sun System
Suns Path / Seasons

Observing the Night Sky: The Celestial Sphere

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History of the Cosmos

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The Geocentric Model 

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This image shows the retrograde phase of Mars as it is track for several weeks.

The Heliocentric Model

Kepler's Laws 

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History of the Cosmos
Modern Astro
Solar System
Earth-Moon-Sun System
Suns Path / Seasons
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